Article
Agronomy
Mathilde Vantyghem, Roel Merckx, Bert Stevens, Rebecca Hood-Nowotny, Rony Swennen, Gerd Dercon
Summary: The study found that 813C, leaf temperature, and DANS are highly sensitive indicators of drought stress in banana. However, the interpretation of 813C ratio is complicated by the potential carbon flux between mother and daughter plants. Implementing 813C and leaf temperature based methods for both mother and daughter plants under various field conditions may be promising once the complexities within the plant system are fully understood.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Forestry
Ismael Aranda, Estrella Cadahia, Brigida Fernandez de Simon
Summary: Osmotic adjustment is a widespread mechanism in response to drought in forest species, but the specific metabolic processes behind this response vary among different Quercus species based on their phylogenetic history and ecology.
Article
Plant Sciences
Thomas M. Sexton, Camille M. Steber, Asaph B. Cousins
Summary: Canopy water use efficiency (WUEcanopy) can impact crop yield but is influenced by various component traits. Intrinsic water use efficiency (WUEi) and leaf water use efficiency affect WUEcanopy, but measurements of leaf water use efficiency should consider environmental variations.
JOURNAL OF PLANT PHYSIOLOGY
(2021)
Article
Plant Sciences
Zhi Zhu, Jingyi Wang, Chaonan Li, Long Li, Xinguo Mao, Ge Hu, Jinping Wang, Jianzhong Chang, Ruilian Jing
Summary: In this study, a candidate gene TaMYB5-3A was identified to regulate leaf rolling in wheat through a genome-wide association study. TaMYB5-3A affects the degree of leaf rolling and canopy temperature. Gene expression analysis revealed that TaMYB5-3A is mainly expressed in leaves and is down-regulated by PEG and ABA treatment. Additionally, TaMYB5-3A induces the expression of TaNRL1 gene by directly binding to the AC cis-acting element in the promoter region of the target gene.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Forestry
Valentin Journe, Thomas Caignard, Andrew Hacket-Pain, Michal Bogdziewicz
Summary: The study found that fruit production in European beech and oaks is influenced by canopy duration, with a nonlinear relationship in beech and a positive linear relationship in oaks.
EUROPEAN JOURNAL OF FOREST RESEARCH
(2021)
Article
Agronomy
Xiaoyu Zhi, Graeme Hammer, Andrew Borrell, Yongfu Tao, Alex Wu, Colleen Hunt, Erik van Oosterom, Sean Reynolds Massey-Reed, Alan Cruickshank, Andries B. Potgieter, David Jordan, Emma Mace, Barbara George-Jaeggli
Summary: Leaf width is correlated with plant transpiration efficiency and could be a suitable surrogate for large breeding programs. The study found that narrow leaves may result in reduced plant transpiration without compromising biomass accumulation. Genetic control of leaf width in sorghum shows similarities with maize and rice. Environmental adaptation may play a role in modifying leaf width.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Agronomy
J. M. Ramirez-Cuesta, M. F. Ortuno, V Gonzalez-Dugo, P. J. Zarco-Tejada, M. Parra, J. S. Rubio-Asensio, D. S. Intrigliolo
Summary: The thermal region of the electromagnetic spectrum can provide valuable information for assessing plant water status. This study compares different measurement methods and finds that aerial measurements are better for predicting stem water potential, while ground measurements are preferred for estimating stomatal conductance and net photosynthesis.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Forestry
Angelica Wu, Leander D. L. Anderegg, Todd E. Dawson, Anna T. Trugman
Summary: Trees have a diverse range of functions that impact the environment, but there is still a lack of understanding when it comes to within-tree variability in leaf traits and how they are affected by microclimatic variations and changes over a growing season. This study conducted extensive measurements on leaf traits in California's blue oak trees and found high levels of variation in leaf area and sapwood area within a tree crown. However, there was limited evidence of adaptive trait plasticity in leaf morphological traits in response to water availability gradients.
Article
Forestry
Shengnan Chen, Zuosinan Chen, Zhe Kong, Zhiqiang Zhang
Summary: The transpiration of urban Pinus tabulaeformis was controlled by leaf stomata, and it responded positively to leaf water potential and whole-tree hydraulic conductance during soil droughts.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Horticulture
Renan Tosin, Isabel Pocas, Helena Novo, Jorge Teixeira, Natacha Fontes, Antonio Graca, Mario Cunha
Summary: This study developed two models to estimate Psi(pd) in a commercial vineyard, utilizing spectral data and machine learning algorithms. The first model estimated Psi(pd) based on vine canopy reflectance and selected suitable vegetation indices, while the second model optimized variables for Psi(pd) estimation based on pigments' concentrations assessed through hyperspectral reflectance. The B-MARS algorithm produced the best results with a RRMSE between 13-14% in validation.
SCIENTIA HORTICULTURAE
(2021)
Article
Forestry
Kaiyu Yang, Jianghao Wu, Xinman Li, Xinbo Pang, Yangchen Yuan, Guohui Qi, Minsheng Yang
Summary: This study compared the application of traditional morphometric methods (TMMs) and geometric morphometric methods (GMMs) in the study of intraspecific leaf morphological characters of Quercus dentata. The results showed that GMMs had higher classification accuracy and could provide more information about leaf shape, while TMMs could provide more information about leaf size.
JOURNAL OF FORESTRY RESEARCH
(2022)
Article
Agronomy
B. A. King, D. D. Tarkalson, V Sharma, D. L. Bjorneberg
Summary: Sugarbeet is a deep-rooted crop that can utilize stored soil water to reduce irrigation requirements, with the potential for thermal-based crop water stress index (CWSI) irrigation scheduling to overcome limitations in soil water monitoring. Canopy temperature monitoring and daily CWSI calculation provided a responsive indication of crop water stress and could be used for irrigation scheduling without the need for extensive soil monitoring.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Environmental Sciences
Dong Xu, Yuwei Lu, Heng Liang, Zhen Lu, Lejun Yu, Qian Liu
Summary: The areca nut is an important economic source in southeast Asia, but the emergence of areca yellow leaf disease has greatly reduced its production. This study proposes a high-precision method to predict the severity of the disease using unmanned aerial vehicles and machine learning algorithms. The correlation between canopy temperature and the disease is also demonstrated.
Article
Forestry
Taehyun Kim, Jungyoon Kim, Jeman Lee, Hyun Seok Kim, Juhan Park, Sangjun Im
Summary: This study estimated the water retention capacity of forest leaf litter through lysimeter measurements under field conditions. The results showed that Pinus koraiensis litter stored more water than Quercus acutissima litter during rainfall. The study demonstrated the importance of leaf litter in water balance and the reliability of lysimetry as a measurement method.
Article
Agronomy
J. J. Hunter, C. G. Volschenk, E. Mania, A. Vicente Castro, M. Booyse, S. Guidoni, A. Pisciotta, R. Di Lorenzo, V Novello, R. Zorer
Summary: Ambient radiation and temperature play a crucial role in grapevine growth and quality. Exposure to direct sunlight in the morning led to higher pulp temperatures and increased anthocyanins and phenols in the berries, contributing to an earlier sugar ripening. Over-exposure and heat peaking in the late afternoon were found to be detrimental to grape composition.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)